Also, realistically, people who currently own semi-autos will still be allowed to keep them, just as people who have pre-86 machine guns and allowed to keep theirs, it would be more of a gradual phase-out.

The feds would have to know a person owns guns, how many, etc. Given how easy it is to sell long guns without a background check, there's no way to trace or find them all. Only shitlib states require registration of guns.

1) Who would collect the guns? Cops in rural flyover? National guard? We would face a legit coup dtat before they knocked on any doors

2) IF they followed through on their orders, there's no feasible way they would collect more than ~20% of the guns. What are they going to do? Search every house? Fine people based on registration (lol)?

2b) we can't even get the illegal guns off the street

3) hollllllly shit can you imagine the right wing militias under this regime. Everyday we would see live coverage of armed standoffs that would make Waco look like a daycare